Idaho Paycheck & Income Tax Calculator

How Idaho income tax works

Idaho applies a flat 5.3%, but two things come off before it bites.

Idaho starts from federal taxable income, so the federal standard deduction does the sheltering — $16,100 for a single filer in 2026, $32,200 filing jointly. On top of that, the first $4,811 of what remains is taxed at 0%.

A single filer on $75,000 is therefore taxed on $58,900, of which the first $4,811 is untaxed, and pays 5.3% on the remaining $54,089 — about $2,867 for the year. That is an effective state rate of roughly 3.8%, well under the 5.3% headline.

There is no local income tax anywhere in Idaho and no employee-side payroll levy, so these figures need nothing added.

A rate cut almost every year

Few states have moved as fast as Idaho, and the pace is why older figures for this state are almost always wrong.

Idaho’s top rate was 6.925% as recently as 2021. It fell to 6.5%, then 6%, then the state abandoned brackets entirely for a flat tax at 5.8%, then 5.695%, and House Bill 40 in March 2025 brought it to 5.3% — applied retroactively to the start of that year.

That is five reductions since 2021, most of them retroactive rather than forward-dated. The retroactivity is itself worth noting: Idaho has repeatedly cut rates part-way through a tax year and backdated them, which means withholding through the year can exceed the eventual liability.

A second act, House Bill 559 signed on February 10, 2026, aligned Idaho with the federal One Big Beautiful Bill Act — including the enhanced standard deduction — again retroactive to January 1, 2025. That is what keeps Idaho’s sheltered amount in step with the federal figure.

Anything quoting Idaho at 5.8%, 5.695% or a bracketed schedule is describing an earlier year.

Take-home pay at every salary in Idaho

After federal tax, the flat 5.3% state tax and FICA. With no local income tax and no state payroll levy, these figures hold anywhere in Idaho — Boise, Meridian, Nampa and Idaho Falls alike.

What lands in your account each payday

On $75,000 a year in Idaho, filing single, split across the pay schedules employers actually use.

The grocery credit

Idaho does something unusual with food, and it shows up on your income tax return rather than at the till.

Most states either exempt groceries from sales tax entirely or tax them at a reduced rate. Idaho applies the full sales tax to groceries, then offsets it with a refundable grocery credit claimed per person on the state income tax return.

The mechanics matter. Because it is refundable, you receive it even if you owe no income tax at all — so a low earner or a retiree with no state liability still gets the payment. And because it is per person rather than per household, a family claims it for each member.

The trade-off is timing and awareness. You pay the sales tax on every shop through the year and recover it once, annually, and only if you file. Someone who is not required to file a return can still claim the credit, but has to know to do so.

This is not modeled in the figures above, which cover income tax only.

Dates that matter for the 2026 tax year

Idaho returns (Form 40) are due April 15, 2027, matching the federal deadline. Idaho grants an automatic six-month extension to file provided you have paid enough of what is owed, though interest runs on any balance. Estimated payments, if required, fall quarterly in April, June, September and the following January.

Questions people ask

What is the Idaho income tax rate for 2026?

A flat 5.3%, reduced from 5.695% by House Bill 40 of March 2025, applied retroactively to January 1, 2025. The first $4,811 of taxable income is not taxed at all.

What can I deduct in Idaho?

Idaho begins from federal taxable income, so the federal standard deduction does the work — $16,100 for a single filer in 2026, $32,200 filing jointly. House Bill 559, signed on February 10, 2026, aligned Idaho with the One Big Beautiful Bill Act including the enhanced federal deduction, retroactive to January 1, 2025.

Why do some sources say Idaho's deduction is $14,600?

Because that is the 2024 federal amount. Idaho conforms to whatever the federal standard deduction is, and it has risen since — $16,100 for a single filer in 2026.

Does any Idaho city charge a local income tax?

No. No Idaho city or county levies an income tax, so where you live in the state does not change your income tax bill.

What is the Idaho grocery credit?

Idaho is one of the few states that applies full sales tax to groceries, and it offsets that with a refundable per-person credit claimed on your income tax return. It is a credit rather than an exemption, so you receive it whether or not you owe income tax.

Are Idaho payroll deductions taken from my paycheck?

Not by the state. Idaho unemployment insurance is employer-funded and the state runs no disability or paid family leave program. Beyond the state income tax, the only deductions are federal.

Is my data sent anywhere?

No. The calculation runs entirely in your browser. There is no account, and the salary you type is never sent to a server or stored. It never leaves your device.